According to the US patent office:
"There are three types of patents
* Utility patents may be granted to anyone who invents or discovers any new and useful process, machine, article of manufacture, or composition of matter, or any new and useful improvement thereof;
* Design patents may be granted to anyone who invents a new, original, and ornamental design for an article of manufacture; and
* Plant patents may be granted to anyone who invents or discovers and asexually reproduces any distinct and new variety of plant."
I don't see how this really is "original" as it seems like a rather logical step in the eventual designs of portable electronics. Just look at the Nintendo DS that has been out since 2004. Either way I think a patent for dual screens is questionable.